Long-term thermal/chemical degradation of ceramic candle filter materials

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dc.contributor.authorMiller, Jean P.en
dc.contributor.departmentMaterials Engineeringen
dc.date.accessioned2014-03-14T21:32:02Zen
dc.date.adate2010-03-17en
dc.date.available2014-03-14T21:32:02Zen
dc.date.issued1991en
dc.date.rdate2010-03-17en
dc.date.sdate2010-03-17en
dc.description.abstractCommercial ceramic candle filters were exposed to harsh environments to determine the effects of alkali and steam on their long-term durability. Ceramic candle filters are composed of relatively coarse aggregates fixed by a ceramic bond. The filters studied include a clay-bonded, granular aluminosilicate candle and three types of clay-bonded, granular SiC candles. The alkali, steam, and steam-alkali corrosion of these commercial ceramic candle filters was examined at temperatures ranging from 450 to 1225°C and pressures up to 1000 psi. Results indicate that the aluminosilicate candle filters perform better than filters made from granular SiC. The SiC filters show binder degradation in steam as well as in alkali-containing environments at temperatures as low as 700°C, with oxidation of the SiC occurring in the steam environments at higher temperatures. Sodium and potassium contaminants in the steam atmospheres accelerate the degradation of both types of filter material.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 60 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03172010-020533en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03172010-020533/en
dc.identifier.urihttp://hdl.handle.net/10919/41704en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1991.M5662.pdfen
dc.relation.isformatofOCLC# 23991377en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1991.M5662en
dc.subject.lcshCandles -- Researchen
dc.subject.lcshCoal -- Combustion -- Researchen
dc.titleLong-term thermal/chemical degradation of ceramic candle filter materialsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMaterials Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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